CN202498199U - Aluminium alloy die-casting die for large-scale LED lamp housing - Google Patents
Aluminium alloy die-casting die for large-scale LED lamp housing Download PDFInfo
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- CN202498199U CN202498199U CN201220024371XU CN201220024371U CN202498199U CN 202498199 U CN202498199 U CN 202498199U CN 201220024371X U CN201220024371X U CN 201220024371XU CN 201220024371 U CN201220024371 U CN 201220024371U CN 202498199 U CN202498199 U CN 202498199U
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- led lamp
- lamp housing
- air discharge
- runner
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Abstract
The utility model discloses an aluminium alloy die-casting die for a large-scale LED lamp housing. The aluminium alloy die-casting die comprises an upper die, a lower die, a runner system and an exhaust system. The runner system comprises a main runner positioned at one side of the upper die and a sub-runner positioned on a die joint of the die and close to the edge of a cavity, wherein a plurality of feed gates arranged between the sub-runner and the edge of the cavity. The exhaust system comprises a plurality of air discharge ducts which are arranged on the lower die at one side opposite to the sub-runner and are in one-to-one correspondence with the feed gates. The aluminium alloy die-casting die facilitates equalization in contraction of the LED lamp housing, and in the moulding, weld lines are not easy to be generated, the LED lamp housing has small deformation and exhaust is smooth, so that surface quality is good.
Description
Technical field
The utility model relates to the mould molding technical field, especially relates to a kind of aluminium alloy casting die that helps improving the die casting surface quality.
Background technology
Aluminium alloy casting die generally comprises upper die and lower die, push rod, flow passage system, and upper and lower mould is respectively equipped with moulding section, and the moulding section of general patrix is a die cavity, and the moulding section of counterdie is a core.Have the die casting in side direction moulding hole for some, corresponding side core-pulling device then also need be set.For example; A kind of disclosed on the Chinese patent document " die casting " with exhaust apparatus, application publication number is CN101850412A, it comprises upper die and lower die, counterdie backing plate and push rod; The die casting machine nozzle is positioned at the patrix top; Be provided with die cavity and the runner that communicates between the patrix that has a common boundary with this die casting machine nozzle and the counterdie, be provided with the exhaust apparatus that communicates with die cavity in the counterdie, this exhaust apparatus comprises overflowing well, exhaust sheet and discharge duct.This invention can be avoided because die venting produces outward appearance flaw and dysplasia not to the utmost through a plurality of flashes and exhaust apparatus are set in counterdie.
Die casting for said structure; Wherein flow passage system is employed in the product end face usually sprue is set; Perhaps adopt side to advance to water mode; Promptly the side at die cavity is provided with sprue, and a cast gate that advances that is communicated with moulding section is set on die joint then, and liquid aluminium alloy gets into die cast in the die cavity radially through sprue with after advancing cast gate.Because the contraction of product is the center to advance cast gate, therefore, the product that side enters to water system causes the unbalanced of contraction easily, and then occurs the contraction distortion of product easily.For the die casting that some surface quality are had relatively high expectations, like large-scale LED lamp housing, the reflective surface of surveying in it requires to have very high fineness; Lateral surface is provided with many parallel fin simultaneously, if the flow passage system that adopts existing side to advance to water, after the aluminium alloy of liquid state would get in the die cavity from runner; Need fill the cavity of each fin of moulding step by step, at this moment, turn over the fluid on top layer on the fluid of entering cavity and merge mutually; Because the temperature of fluid reduces; Therefore both are difficult to merge well, produce tiny fusion line after the moulding of LED lamp housing easily on the surface, influence surface quality; Reduce the structural strength of LED lamp housing, and cause the distortion after the moulding of LED lamp housing because of shrink inconsistent.
The utility model content
The purpose of the utility model is to advance to water the existing LED lamp housing of system and be easy to generate the problem that contraction distortion, surface are easy to generate fusion line in order to solve existing side, provides a kind of and shrinks equilibrium, side that surface quality is good advances to water formula LED lamp housing compression mod.
To achieve these goals; The utility model adopts following technical scheme: a kind of aluminum alloy die-casting die of large LED lamp housing; Comprise upper die and lower die, flow passage system and gas extraction system; Said flow passage system comprises the sprue that is positioned at patrix one side and is positioned on the die joint of mould the runner near the die cavity edge; Between runner and die cavity edge, be provided with some cast gates that advance, said gas extraction system comprise be arranged on a side relative on the counterdie with runner and with advance gate location plurality of rows air drain one to one.For the LED lamp housing can balancedly be shunk after moulding, what the utility model adopted is that the side that is the rake shape enters to water system, after fluid gets into from sprue; Branch to the die cavity edge through runner; Advance cast gate and get in the die cavity through a plurality of then, put opposite side, avoided the generation of fusion line thereby make the die cavity inner fluid be substantially parallel flows by a side; And; Corresponding flow process length of flow and the direction basically identical that respectively advances cast gate, the contraction after the moulding is also basic identical, can reduce the LED lamp housing distortion that produces because of shrinking significantly.Particularly, the flow direction of fluid is consistent with the trend of reinforcement, helps improving the intensity of reinforcement.In addition, the air in the die cavity is balancedly to be flowed toward opposite side by a side, and therefore, the aggregation position of last gas is fixed, and helps accurately being provided with the position of air discharge duct, the abundant exhaust when realizing moulding.
As preferably; Said runner comprises portion of dispersing triangular in shape and the strip distributary division that is provided with along the die cavity edge; Said sprue is connected with the top that triangle is dispersed portion, and the base of dispersing portion is connected with distributary division one side, and the opposite side of distributary division connects into cast gate.The leg-of-mutton portion of dispersing is flat cavity, and it helps being the fan shooting shape from the fluid that sprue flows out and flows equably, the strip distributary division that is connected with the base of the portion of dispersing since thickness greater than the portion of dispersing; Therefore, the flow resistance of distributary division is less, and the fluid pressure that is introduced into distributary division can reduce suddenly; And the sectional area that advances cast gate is less, and its flow resistance is bigger, at this moment; Fluid can at first be full of whole distributary division, and then gets in the die cavity from respectively advancing cast gate together, advances the less sectional area of cast gate and makes fluid formation high speed and high pressure flow; And and then produce great amount of heat; The temperature of fluid is raise, make the fine fusion of fluid ability that gets into die cavity, avoid because of merging harmful effect intensity.
As preferably, be provided with push rod in the corresponding sprue of counterdie position, the upper end of push rod is provided with the branch flow cone that stretches into the sprue inner conical.Be provided with the fluid that push rod that band divides flow cone helps in the sprue in the corresponding sprue of counterdie position and get into the portion of dispersing equably, and can reduce the material handle waste material of sprue, can guarantee that flow passage system and LED lamp housing balancedly eject together simultaneously.
As preferably, the cross section of said minute flow cone is oval, accordingly, and the bell mouth shape of the terminal ovalize of said sprue.Make the fluid in the sprue when arriving end, can diffuse to a bigger scope, help improving the flow uniformity of dispersing portion's fluid.
As preferably, said gas extraction system also comprises and is arranged on the c-shaped total air discharge duct of a side relative with runner on the counterdie, and the two ends of said total air discharge duct extend to the lateral edges of counterdie, and each air discharge duct is communicated with total air discharge duct; The length of said air discharge duct is the 10-20 millimeter, and the area of total air discharge duct cross section is 0.8-1.2 a times of each air discharge duct cross-sectional area summation.Because the degree of depth of air discharge duct has comparatively strict requirement; And the degree of depth of total air discharge duct can be greater than the degree of depth of air discharge duct, and its processing is comparatively convenient, and each air discharge duct is connected to the length that total air discharge duct can shorten air discharge duct greatly; And then can simplify the processing of gas extraction system, and make exhaust smooth and easy.Particularly, when actual production, help adopting hand-operated tools to increase air discharge duct, to guarantee the good of exhaust according to concrete exhaust situation temporarily.
As preferably, also comprise hydraulic pressure core-pulling mechanism or the Angle Pin structure of loosing core, so that the sidewise hole on the moulding LED lamp housing.
As preferably, die cavity is arranged on the counterdie, and core then is arranged on the patrix, and corresponding LED lamp housing radiator partly adopts edge to piece together structure in the die cavity.Because the outer surface of LED lamp housing is provided with fin, can produce bigger knockout press, therefore, with die cavity be arranged on can guarantee moulding on the counterdie after the LED lamp housing stay counterdie one side so that the LED lamp housing is ejected through ejecting mechanism.The die cavity that edge is pieced together structure then can make things convenient for its processing and manufacturing.
As preferably, corresponding LED lamp housing reflecting surface partly adopts overall structure in the core, makes it can be through the machined once-forming, avoids manual polishing to cause the LED lamp housing reflective surface and actual after the moulding to require variant.
Therefore, the utlity model has following beneficial effect: shrink balanced, be difficult for producing fusion line, the distortion of LED lamp housing is little, exhaust is smooth and easy, surface quality good.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the vertical view of the utility model part of the lower die.
Fig. 3 is the generalized section at sprue place in the utility model.
Among the figure: 1, patrix 2, counterdie 3, sprue 4, runner 41, disperse portion 42, distributary division
43, advance cast gate 5, hydraulic pressure core-pulling mechanism 6, push rod 7, gas extraction system 71, air discharge duct
72, total air discharge duct 8, branch flow cone
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further description.
In Fig. 2, embodiment shown in Figure 3, a kind of aluminum alloy die-casting die of large LED lamp housing is used for a kind of large-scale LED lamp housing of moulding; Comprise patrix 1, counterdie 2, flow passage system and gas extraction system 7, die cavity is arranged on the counterdie, correspondingly; Core then is arranged on the patrix; And corresponding LED lamp housing radiator partly adopts to insert and is spliced in the die cavity, and the line of demarcation of inserting can be arranged on the fin place of LED lamp housing, to make things convenient for its processing and polishing.Simultaneously, corresponding LED lamp housing reflecting surface partly adopts overall structure in the core, to guarantee its machining accuracy.
In addition; What flow passage system adopted is that side advances to water mode; Comprise the sprue 3 that is positioned at model cavity one side and be positioned on the die joint of mould runner 4 near the die cavity edge; Runner comprises portion of dispersing 41 and the strip distributary division 42 that is provided with along the die cavity edge, and the portion of dispersing is flat cavity roughly triangular in shape, and sprue is positioned at top and coupled the connecing that triangle is dispersed portion; The base of dispersing portion is connected with distributary division one side, between the distributary division opposite side of runner and die cavity edge, is provided with 8 and advances cast gate 43.Above-mentioned runner can be arranged on the counterdie, also can adopt the assembly mode is separately positioned on the upper die and lower die.For making the fluid in the sprue get into the portion of dispersing equably; And the material handle waste material of minimizing sprue, in the corresponding sprue of counterdie position push rod 6 being set, the upper end of push rod is provided with stretches into branch flow cone 8 tapered in the sprue; The cross section that divides flow cone is oval; Its long axis direction and distributary division almost parallel, corresponding ground, the bell mouth shape of the terminal ovalize of sprue.Certainly divide flow cone also to can be made into and fit, thereby make fluid get into the portion of dispersing, to reduce the waste material of material handle through space near die cavity one side away from die cavity one side and sprue.
For the sidewise hole on the moulding LED lamp housing, hydraulic pressure core-pulling mechanism 5 or the Angle Pin structure (not shown) of loosing core can be set.
For making exhaust smooth and easy, improve the processability of product, the gas extraction system of the utility model adopts a kind of concentrated exhaust mode; It is arranged on a side relative with runner on the counterdie, and is as shown in Figure 2, and this gas extraction system 7 comprises on the die joint that is arranged on counterdie and advances gate location 8 air discharge ducts 71 and 1 total air discharge duct 72 one to one; Total air discharge duct is roughly c-shaped; Its two ends are communicated to the side of counterdie, and air discharge duct one end links to each other with the moulding section of counterdie, and the other end then links to each other with total air discharge duct; The degree of depth of total air discharge duct can be greater than the degree of depth of air discharge duct, so that make exhaust smooth and easy.The length of air discharge duct can be preferably 15 millimeters between the 10-20 millimeter, to make things convenient for its processing; And the area of total air discharge duct cross section should be 0.8-1.2 times of each air discharge duct cross-sectional area summation, is preferably 1.1 times.Because a total air discharge duct can connect a plurality of air discharge ducts simultaneously; Therefore, can reduce amount of machining, be more convenient in actual production, increasing air discharge duct in the not smooth position of exhaust as the case may be temporarily; Because air discharge duct does not need directly to extend to the outer ledge of counterdie; And only need very short one section to be connected with total air discharge duct and to get final product, therefore, air discharge duct can the manual grinding tool of online direct usefulness be polished and is formed.
The utility model after fluid gets into from sprue, is at first got into the portion of dispersing by the branch flow cone of taper shunting back when moulding; Be fan-shaped entering distributary division then; After fluid is full of distributary division, enter into die cavity from 8 with advancing the cast gate basic synchronization, the high temperature fluid that gets into die cavity merges the back and in die cavity, is balancedly flowed toward opposite side by a side; And the gas in the die cavity is compressed to the opposite side of die cavity; This gas flows out from 8 air discharge ducts, and drains into outside the mould through total air discharge duct, thereby makes the LED lamp housing be able to moulding well.
Claims (9)
1. the aluminum alloy die-casting die of a large LED lamp housing; Comprise patrix (1), counterdie (2), flow passage system and gas extraction system (7); It is characterized in that; Said flow passage system comprises on sprue (3) that is positioned at patrix one side and the die joint that is positioned at mould the runner (4) near the die cavity edge; Between runner and die cavity edge, be provided with some cast gates (43) that advance, said gas extraction system comprise be arranged on a side relative on the counterdie with runner and with advance gate location plurality of rows air drain (71) one to one.
2. the aluminum alloy die-casting die of a kind of large LED lamp housing according to claim 1; It is characterized in that; Said runner comprises portion of dispersing (41) triangular in shape and the strip distributary division (42) that is provided with along the die cavity edge; Said sprue is connected with the top that triangle is dispersed portion, and the base of dispersing portion is connected with distributary division one side, and the opposite side of distributary division connects into cast gate.
3. the aluminum alloy die-casting die of a kind of large LED lamp housing according to claim 2 is characterized in that, is provided with push rod (6) in the corresponding sprue of counterdie position, and the upper end of push rod is provided with the branch flow cone (8) that stretches into the sprue inner conical.
4. the aluminum alloy die-casting die of a kind of large LED lamp housing according to claim 3 is characterized in that, the cross section of said minute flow cone is oval, accordingly, and the bell mouth shape of the terminal ovalize of said sprue.
5. according to claim 1 or 2 or the aluminum alloy die-casting die of 3 or 4 described a kind of large LED lamp housings; It is characterized in that; Said gas extraction system also comprises and is arranged on the c-shaped total air discharge duct (72) of a side relative with runner on the counterdie; The two ends of said total air discharge duct extend to the lateral edges of counterdie, and each air discharge duct is communicated with total air discharge duct.
6. according to claim 1 or 2 or the aluminum alloy die-casting die of 3 or 4 described a kind of large LED lamp housings, it is characterized in that the length of said air discharge duct is the 10-20 millimeter, the area of total air discharge duct cross section be 0.8-1.2 a times of each air discharge duct cross-sectional area summation.
7. according to claim 1 or 2 or the aluminum alloy die-casting die of 3 or 4 described a kind of large LED lamp housings, it is characterized in that, also comprise hydraulic pressure core-pulling mechanism or the Angle Pin structure of loosing core.
8. according to claim 1 or 2 or the aluminum alloy die-casting die of 3 or 4 described a kind of large LED lamp housings, it is characterized in that die cavity is arranged on the counterdie, core then is arranged on the patrix, and corresponding LED lamp housing radiator partly adopts edge to piece together structure in the die cavity.
9. the aluminum alloy die-casting die of a kind of large LED lamp housing according to claim 8 is characterized in that, corresponding LED lamp housing reflecting surface partly adopts overall structure in the core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220024371XU CN202498199U (en) | 2012-01-19 | 2012-01-19 | Aluminium alloy die-casting die for large-scale LED lamp housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220024371XU CN202498199U (en) | 2012-01-19 | 2012-01-19 | Aluminium alloy die-casting die for large-scale LED lamp housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202498199U true CN202498199U (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220024371XU Expired - Fee Related CN202498199U (en) | 2012-01-19 | 2012-01-19 | Aluminium alloy die-casting die for large-scale LED lamp housing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182499A (en) * | 2013-04-09 | 2013-07-03 | 丹阳荣嘉精密机械有限公司 | Lampshade body pressure-casting mould |
| CN103433433A (en) * | 2013-08-21 | 2013-12-11 | 丹阳市华明光学器材有限公司 | Mold and method for manufacturing door closer shell |
| CN105642863A (en) * | 2016-01-15 | 2016-06-08 | 江苏飞亚金属制品有限公司 | Die-casting technique for manufacturing aluminum alloy step treads in vacuum state |
| CN109338419A (en) * | 2018-12-03 | 2019-02-15 | 台州市黄岩圣发模具有限公司 | A kind of PDCPD nickel mould and its electroforming manufacturing process |
| CN110340302A (en) * | 2019-08-22 | 2019-10-18 | 徐海东 | A kind of shape chamber equipment of hexagon shell cast product piece |
| CN114769557A (en) * | 2022-04-24 | 2022-07-22 | 湛江德利车辆部件有限公司 | Throttle valve die-casting die and manufacturing method thereof |
-
2012
- 2012-01-19 CN CN201220024371XU patent/CN202498199U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182499A (en) * | 2013-04-09 | 2013-07-03 | 丹阳荣嘉精密机械有限公司 | Lampshade body pressure-casting mould |
| CN103433433A (en) * | 2013-08-21 | 2013-12-11 | 丹阳市华明光学器材有限公司 | Mold and method for manufacturing door closer shell |
| CN103433433B (en) * | 2013-08-21 | 2015-03-25 | 丹阳市华明光学器材有限公司 | Mold and method for manufacturing door closer shell |
| CN105642863A (en) * | 2016-01-15 | 2016-06-08 | 江苏飞亚金属制品有限公司 | Die-casting technique for manufacturing aluminum alloy step treads in vacuum state |
| CN109338419A (en) * | 2018-12-03 | 2019-02-15 | 台州市黄岩圣发模具有限公司 | A kind of PDCPD nickel mould and its electroforming manufacturing process |
| CN110340302A (en) * | 2019-08-22 | 2019-10-18 | 徐海东 | A kind of shape chamber equipment of hexagon shell cast product piece |
| CN114769557A (en) * | 2022-04-24 | 2022-07-22 | 湛江德利车辆部件有限公司 | Throttle valve die-casting die and manufacturing method thereof |
| CN114769557B (en) * | 2022-04-24 | 2023-06-20 | 湛江德利车辆部件有限公司 | Throttle valve die-casting die and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20150119 |
|
| EXPY | Termination of patent right or utility model |